[Towertalk] Coax Condiut

[WA2BPE]

Good idea but you had better check your soil percolation first.  In my (specific) location, the topsoil is 0 to 6" with a high clay content followed by shale/rock and/or clay.  Drainage is almost nil.  Here, a "French drain" would fill up and go nowheres without additional gravel, etc.  This problem is commonplace with septic systems and why sand filters are required.

Tom - WA2BPE

Tom Hybiske wrote:

> David, I agree with WC1M suggestions.  Additionally, I would suggest the installation of a "T" in the middle of the run that would drain into an underground "French drain"; a bucket-sized hole filled with gravel.   An amazing amount of condensate will accumulate over a period of time, and literally bathe your coax and control cables in water.  A gentle slope on either side of the "T" will allow the condensate to run into the hole to absorbed into the ground.  I would bring the pipe up alongside of rather than thru the base.  While the latter looks nice, it might be a PITA later on should you ever have to modify your conduit run.  When I ran mine, I purchased all the materials from Home Depot with also carried the sweeps you'll need for the 90's.  I have four 90's in my run, and had no problems chasing a "ghost" thru the pipe using the exhaust from a shop vac and a string tied to a plastic bag.  This was followed up with the actual pull rope.  My 3" conduit contains one  7/8" Heliax,
> one RG8, rotor control, coax switch control, one weather station control, and a length of pull rope.  With the exception of the weather station, all were pulled at once with the help of Ideal wire lube and my really big kid!  I fed, he pulled.  Remember that unless you can chase a future ghost thru the conduit, the pull rope you have in there will wrap around the existing cables as they were fed thru the run.  Future runs can be difficult to pull, so try to do as many as you can at once.   A larger than required pipe will also facilitate a fresh pull line easier than one that's just big enough.  Good luck with your installation.
>
> 7 3,
> Tom K3GM
> Sturbridge, MA
>
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